Home / 149,568.66-206,405.39-81,587.12

Finding the Fourth Proportional to 149,568.66, 206,405.39 and 81,587.12

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Solution

The fourth proportional to 149,568.66, 206,405.39 and 81,587.12 is: 112,590.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,568.66 : 206,405.39 = 81,587.12 : x
  2. Step 2: Convert to fraction form
    149,568.66/206,405.39 = 81,587.12/x
  3. Step 3: Cross multiply
    149,568.66x = 206,405.39 × 81,587.12
  4. Step 4: Simplify right side
    149,568.66x = 16,840,020,494.52
  5. Step 5: Solve for x
    x = 16,840,020,494.52/149,568.66
  6. Step 6: Final answer
    x = 112,590.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.